Home / 18,420.46-25,389.88-13,035.94

Finding the Fourth Proportional to 18,420.46, 25,389.88 and 13,035.94

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Solution

The fourth proportional to 18,420.46, 25,389.88 and 13,035.94 is: 17,968.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.46 : 25,389.88 = 13,035.94 : x
  2. Step 2: Convert to fraction form
    18,420.46/25,389.88 = 13,035.94/x
  3. Step 3: Cross multiply
    18,420.46x = 25,389.88 × 13,035.94
  4. Step 4: Simplify right side
    18,420.46x = 330,980,952.29
  5. Step 5: Solve for x
    x = 330,980,952.29/18,420.46
  6. Step 6: Final answer
    x = 17,968.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.